1 files changed, 95 insertions, 42 deletions

diff --git a/arch/x86/pci/bus_numa.c b/arch/x86/pci/bus_numa.c
index f939d603adf..f3a2cfc1412 100644
--- a/arch/x86/pci/bus_numa.c
+++ b/arch/x86/pci/bus_numa.c
@@ -1,84 +1,136 @@
 #include <linux/init.h>
 #include <linux/pci.h>
+#include <linux/range.h>
 
 #include "bus_numa.h"
 
-int pci_root_num;
-struct pci_root_info pci_root_info[PCI_ROOT_NR];
-int found_all_numa_early;
+LIST_HEAD(pci_root_infos);
 
-void x86_pci_root_bus_res_quirks(struct pci_bus *b)
+static struct pci_root_info *x86_find_pci_root_info(int bus)
 {
-	int i;
-	int j;
 	struct pci_root_info *info;
 
-	/* don't go for it if _CRS is used already */
-	if (b->resource[0] != &ioport_resource ||
-	    b->resource[1] != &iomem_resource)
-		return;
+	list_for_each_entry(info, &pci_root_infos, list)
+		if (info->busn.start == bus)
+			return info;
 
-	if (!pci_root_num)
-		return;
+	return NULL;
+}
 
-	/* for amd, if only one root bus, don't need to do anything */
-	if (pci_root_num < 2 && found_all_numa_early)
-		return;
+int x86_pci_root_bus_node(int bus)
+{
+	struct pci_root_info *info = x86_find_pci_root_info(bus);
 
-	for (i = 0; i < pci_root_num; i++) {
-		if (pci_root_info[i].bus_min == b->number)
-			break;
-	}
+	if (!info)
+		return NUMA_NO_NODE;
 
-	if (i == pci_root_num)
-		return;
+	return info->node;
+}
+
+void x86_pci_root_bus_resources(int bus, struct list_head *resources)
+{
+	struct pci_root_info *info = x86_find_pci_root_info(bus);
+	struct pci_root_res *root_res;
+	struct pci_host_bridge_window *window;
+	bool found = false;
+
+	if (!info)
+		goto default_resources;
+
+	printk(KERN_DEBUG "PCI: root bus %02x: hardware-probed resources\n",
+	       bus);
+
+	/* already added by acpi ? */
+	list_for_each_entry(window, resources, list)
+		if (window->res->flags & IORESOURCE_BUS) {
+			found = true;
+			break;
+		}
 
-	printk(KERN_DEBUG "PCI: peer root bus %02x res updated from pci conf\n",
-			b->number);
+	if (!found)
+		pci_add_resource(resources, &info->busn);
 
-	info = &pci_root_info[i];
-	for (j = 0; j < info->res_num; j++) {
+	list_for_each_entry(root_res, &info->resources, list) {
 		struct resource *res;
 		struct resource *root;
 
-		res = &info->res[j];
-		b->resource[j] = res;
+		res = &root_res->res;
+		pci_add_resource(resources, res);
 		if (res->flags & IORESOURCE_IO)
 			root = &ioport_resource;
 		else
 			root = &iomem_resource;
 		insert_resource(root, res);
 	}
+	return;
+
+default_resources:
+	/*
+	 * We don't have any host bridge aperture information from the
+	 * "native host bridge drivers," e.g., amd_bus or broadcom_bus,
+	 * so fall back to the defaults historically used by pci_create_bus().
+	 */
+	printk(KERN_DEBUG "PCI: root bus %02x: using default resources\n", bus);
+	pci_add_resource(resources, &ioport_resource);
+	pci_add_resource(resources, &iomem_resource);
+}
+
+struct pci_root_info __init *alloc_pci_root_info(int bus_min, int bus_max,
+						 int node, int link)
+{
+	struct pci_root_info *info;
+
+	info = kzalloc(sizeof(*info), GFP_KERNEL);
+
+	if (!info)
+		return info;
+
+	sprintf(info->name, "PCI Bus #%02x", bus_min);
+
+	INIT_LIST_HEAD(&info->resources);
+	info->busn.name  = info->name;
+	info->busn.start = bus_min;
+	info->busn.end   = bus_max;
+	info->busn.flags = IORESOURCE_BUS;
+	info->node = node;
+	info->link = link;
+
+	list_add_tail(&info->list, &pci_root_infos);
+
+	return info;
 }
 
-void __devinit update_res(struct pci_root_info *info, size_t start,
-			      size_t end, unsigned long flags, int merge)
+void update_res(struct pci_root_info *info, resource_size_t start,
+		resource_size_t end, unsigned long flags, int merge)
 {
-	int i;
 	struct resource *res;
+	struct pci_root_res *root_res;
 
 	if (start > end)
 		return;
 
+	if (start == MAX_RESOURCE)
+		return;
+
 	if (!merge)
 		goto addit;
 
 	/* try to merge it with old one */
-	for (i = 0; i < info->res_num; i++) {
-		size_t final_start, final_end;
-		size_t common_start, common_end;
+	list_for_each_entry(root_res, &info->resources, list) {
+		resource_size_t final_start, final_end;
+		resource_size_t common_start, common_end;
 
-		res = &info->res[i];
+		res = &root_res->res;
 		if (res->flags != flags)
 			continue;
 
-		common_start = max((size_t)res->start, start);
-		common_end = min((size_t)res->end, end);
+		common_start = max(res->start, start);
+		common_end = min(res->end, end);
 		if (common_start > common_end + 1)
 			continue;
 
-		final_start = min((size_t)res->start, start);
-		final_end = max((size_t)res->end, end);
+		final_start = min(res->start, start);
+		final_end = max(res->end, end);
 
 		res->start = final_start;
 		res->end = final_end;
@@ -88,14 +140,15 @@ void __devinit update_res(struct pci_root_info *info, size_t start,
 addit:
 
 	/* need to add that */
-	if (info->res_num >= RES_NUM)
+	root_res = kzalloc(sizeof(*root_res), GFP_KERNEL);
+	if (!root_res)
 		return;
 
-	res = &info->res[info->res_num];
+	res = &root_res->res;
 	res->name = info->name;
 	res->flags = flags;
 	res->start = start;
 	res->end = end;
-	res->child = NULL;
-	info->res_num++;
+
+	list_add_tail(&root_res->list, &info->resources);
 }